This Spartan was the first ever made by the UNSC. His suit was quickly thrown together out of whatever materials were strong enough to sustain him. The man inside the suit was stricken with cancer and had 1 month to live so he volunteered. he surprisingly survived the operation and lived to fight a few major battles.
In a forest during a mission his suit locked up completely and he was never heard from again....
credit to legomocs. for his design on the spartan check his out it is much better than mine.